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Caterpillar D8 vs Komatsu D155AX-8
Published specs and dimensions of two dozers side by side. Every value comes from the manufacturer document cited on each model page; ≈ marks a unit conversion.
Key differences
The Caterpillar D8 is 2,218 lb (1,006 kg) lighter, 6 in (140 mm) taller and 1 ft 8 in (510 mm) shorter than the Komatsu D155AX-8.
- Net power: 271 kW / 363 hp (Caterpillar D8) vs 264 kW / 354 hp (Komatsu D155AX-8); Caterpillar D8 is higher.
- Shipping / tractor weight: 34,530 kg / 76,126 lb (Caterpillar D8) vs 32,700 kg / 72,091 lb (Komatsu D155AX-8); Caterpillar D8 is higher.
- Track gauge / tread: 2,080 mm / 6 ft 10 in (Caterpillar D8) vs 2,140 mm / 7 ft 0 in (Komatsu D155AX-8); Komatsu D155AX-8 is higher.
- Track length on ground: 3,210 mm / 10 ft 6 in (Caterpillar D8) vs 3,275 mm / 10 ft 9 in (Komatsu D155AX-8); Komatsu D155AX-8 is higher.
- Ground clearance: 622 mm / 24.5 in (Caterpillar D8) vs 500 mm / 19.7 in (Komatsu D155AX-8); Caterpillar D8 is higher.
- Ground pressure: 89.7 kPa / 13 psi (Caterpillar D8) vs 99.5 kPa / 14.4 psi (Komatsu D155AX-8); Komatsu D155AX-8 is higher.
Computed from the published figures for each model's stated configuration (listed below the table). Options such as boom, bucket, tracks or tires change these numbers.
Caterpillar D8 specs Komatsu D155AX-8 specs Open in interactive compare Trailer fit: Caterpillar D8 Trailer fit: Komatsu D155AX-8
Side-by-side specs
Use the Metric / Imperial switch at the top to change units. Highlighted rows differ.
| Spec | Caterpillar D8 | Komatsu D155AX-8 |
|---|---|---|
| Weights | ||
| Operating weight | 39,500 kg | 40,506 kg |
| Shipping / tractor weight | 34,530 kg | 32,700 kg |
| Dimensions | ||
| Overall length | ≈ 7,910 mm | 8,420 mm |
| Overall width | 4,038 mm | Not published |
| Overall height | ≈ 3,530 mm | 3,390 mm |
| Track gauge / tread | ≈ 2,080 mm | 2,140 mm |
| Track length on ground | ≈ 3,210 mm | 3,275 mm |
| Shoe / track width | 610 mm | 610 mm |
| Ground clearance | 622 mm | 500 mm |
| Undercarriage / tires | ||
| Undercarriage type | Crawler (steel tracks), elevated sprocket | Crawler (steel tracks, K-Bogie) |
| Track rollers / shoes per side | 44 sections, 8 bottom rollers per side | 7 track rollers, 2 carrier rollers, 42 shoes per side |
| Ground pressure | ||
| Ground pressure | 89.7 kPa | 99.5 kPa |
| Engine | ||
| Engine model | Cat C15 | Komatsu SAA6D140E-7 |
| Net power | 271 kW | 264 kW |
| Gross power | 296 kW | 268 kW |
| Displacement | 15.2 L | 15.24 L |
| Rated speed | 2,050 rpm | 1,900 rpm |
| Hydraulics | ||
| Pump / aux flow | 280 L/min | 180 L/min |
| System / relief pressure | ≈ 24 MPa | 27.5 MPa |
| Performance | ||
| Blade capacity | 10.3 m³ | 9.4 m³ |
| Blade / moldboard width | 4,038 mm | 4,060 mm |
| Max travel speed | 11.1 km/h | 11.6 km/h |
Configurations.
Caterpillar D8: Build 22A, standard D8 with Semi-Universal (SU) blade, single-shank ripper, 610 mm shoes; Tier 4 Final/Stage V.
Komatsu D155AX-8: Strengthened SIGMADOZER (dual tilt, power pitch), giant ripper, ROPS cab, 610 mm extreme-service shoes, K-Bogie undercarriage; EPA Tier 4 Final